THE FREE ATMOSPHERE IN THE VICINITY OF FRONTS Analysis of the observations by the Meteorological Research Flight, 1950-52

摘要

During the period 1950 to 1952 some 20 flights were made by aircraft of the Meteorological Research Flight from Farnborough in order to explore the structure of fronts. The results indicate the great complexity of the atmosphere in frontal regions. Although the observations confirm that a sloping bar clinic zone exists, it is clear that no idealized frontal model can adequately represent an individual front. Small-scale irregularities of temperature are sufficient to prevent any clear delimitation of the frontal zone.nSome very dry air was often found in frontal regions in close juxtaposition to cloud and rain. Its presence carbo adequately explained by large-scale air movements which are primarily horizontal. Cloud structure and turbulence in frontal regions were also observed.